My opinion of the War

Why does this all happen because of one single prince. A man shoots another man to death which causes that millions of men will shoot at each other. And that makes logic sense? If the people from the Sovjet-Unie just didn't support the Serbs for one time, millions of lives would be spared. Sadly enough they helped them and know I have to go to Belgium. A few people from my village already died. Also 2 far cousins of me. Later on, I'll be on that list too. And that all because of one goddamn prince. Ridiculous. Now we are smarter only more people die. The plan to dig ourselves into the ground might be smart, but that made the war spent 100 times longer.